Flue door shield



Feb. 9, 1943. F. w. HvosLEF FLUE DOOR SHIELD Filed June` 14, 1941Patented Feb. 9, 1943 FLUE DOOR SHIELD Fredrik W. Ivoslef, Kohler, Wis.

Application June 14, 1941, Serial No. 398,086

(Cl. 11d-173) l Claim.

My invention relates to improvements in ue door shields for boilers, andit is the object of my invention to provide means whereby a single doormay be utilized to cover both the rebox opening and the flue clean-outopening of the boiler.

With the foregoing and related objects in view, the improvement residesin the construction illustrated and described in the accompanying draving, in which Figure 1 is a front View of a boiler constructed inaccordance with my invention, the door being shown closed; Figure 2, asectional view through the door, taken on the line 2 2 of Figure 3;Figure 3, a front View similar to Figure 1 but with the door removed;and Figure 4, a perspective view of the flue door shield.

In the drawing the numeral l indicates a boiler of conventional designprovided with an opening 2 to the re box and flue openings 3 at theiront of the boiler to aord access to the flues for cleaning purposes.

It has been conventional construction to provide a door for access tothe rebox and a separate door for access to the ue opening. Myimprovement comprehends the use of a single door to cover both theopening to the rebox and the flue openings, thus materially reducing thecost of manufacture as Well as making a more satisfactory construction.

To this end I provide a single door i covering both the rebox opening 2and the flue opening 3. The door 4 may be provided with the conventionalliner 5 at the portion adjacent the rebox opening 2.

In order to prevent the escape of gases from the flue opening 3 when thedoor 4 is opened, I provide a ue door shield, indicated generally by thenumeral adapted to seal the flue openings 3 against the escape of gas.

It will be understood that, in the conventional boiler construction,there are two ue openings 3, separated by a water passageway 1.

The flue door shield 6 is, in the form illustrated, composed of a pairof baille plates 3 joined by a saddle 9 adapted to overlie the Waterpassageway 1. As is illustrated, particularly in Figure 3, the baffleplates 8 are of a height somewhat greater than the height of the ilueopenings so as to overlie the top edges of the inner surface of saidflue openings when inserted therein. The saddle 53, by its abutmentagainst the Water passageway 1, together with the overlying portion ofthe baffles, serves as means for holding the baffle plates in positionto close the iiue openings. The assembly may readily be removed byraising the saddle 9, tilting the bafe plates 8, and Withdrawing themfrom the flue openings, and may be replaced by reversing this process.

When it is desired to clean the flues the flue door shield will, ofcourse, be removed, permitting access to the ues for cleaning.

The specic details herein disclosed are for the purpose of illustrationonly, and I do not desire to limit myself to such details, as it isobvious that various modiiications may be made therein without departingfrom the essential features of the invention, as defined in the appendedclaim.

I claim:

In combination, a boiler, the front of said boiler being formed toprovide a rebox opening and a pair of flue cleanout openings, a waterpassageway separating said flue cleanout openings, a door adapted, whenclosed, to close both said rebox opening and said flue cleanoutopenings, a pair of baille plates of a height greater than said fluecleanout openings adapted to abut the inner surface of said boileradjacent said flue cleanout openings and a saddle attached to saidbaille plates and adapted to overlie said water passageway whereby tohold said baille plates in position to close said ue cleanout openings.

FREDRIK W, HVOSLEF.

